(19)

(11)

EP 4 211 736 A1

(12)

(43) Date of publication: 19.07.2023 Bulletin 2023/29 (21) Application number: 21777458.7 (22) Date of filing: 10.09.2021

(51) International Patent Classification (IPC):  H01M 8/04089(2016.01) H01M 8/249(2016.01) H01M 8/2475(2016.01) (52) Cooperative Patent Classification (CPC): H01M 8/04089; H01M 8/2475; H01M 8/249; H01M 2250/20; Y02E 60/50; Y02T 90/40 (86) International application number: PCT/EP2021/074926 (87) International publication number: WO 2022/053607 (17.03.2022 Gazette 2022/11)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 10.09.2020 DK PA202001024 (71) Applicant: Ballard Power Systems Europe A/S 9500 Hobro (DK)	(72) Inventors: GYLDENØHR, Rasmus 9500 Hobro (DK) KARLSEN, Morten Legardt Hobro 9500 (DK) HANSEN, Daniel Blom 9500 Hobro (DK) LINDENGREN, Rasmus Dahl 9500 Hobro (DK) HESSELHOLT, Karin 9500 Hobro (DK) (74) Representative: Guardian IP Consulting I/S  Diplomvej, Building 381 2800 Kgs. Lyngby 2800 Kgs. Lyngby (DK)